Dust-guard for autocars.



No. 742,580. PATENTED 00127, 1903.

w. H. BROWN.- 7

DUST GUARD FOR AUTOOARS. APPLICATION FILED AUG. 13. 190s N0 MODEL.

Wit-n ed 666.

now-42,580.

UNITED STATES Iatented October 27, 1905.

PATENT OFFICE.

DUST-GUARD FOR AUTOCARS.

SPECIFICATION forming part'of Letters Patent No. 752,580, dated October 27, 1903. Application filed August 13, 1903. Serial 169,350. (No model.)

To aZZ whom it may concern;

Be it known that I, WILLIAM H. BROWN, a citizen of the United'States, residing at Cleveland, in the county of Guyahoga' and State of Ohio, have invented a certain new and use-- ful Improvement in Dust-Guards for Auto cars, of which the following is a full, clear, and exact description, reference being bad to the accompanying drawings.

Riders in autocars traveling on dusty roads are subjected to great annoyance and discomfort by the dust which is stirred up by the car and surges over the top of the rear end thereof. The car in its forward movement, especially if it is moving rapidly, creates air-currents beneath it which stir up the dust, and it also creates behind it a partial vacuum. The dustladened air from beneath the car rushes up behind it to fill this partial vacuum and as a result deposits or almost throws the dust over the rear top edge. into the car and upon the passengers. To prevent this, a shield has been extended out behind the car; but such a shield is not only an imperfect expedient, but it is also unsightly and is in the way, especially on atouring-car of the Tonneau type, since it must be displaced to permit the rear door to be opened.

The object of this invention is to prevent the dust-ladened air from flowing over the top of an autocar, especially at the rear end thereof, and to accomplish this result by simple means which are not in the way and do not look badly.

The invention consists, broadly, in the combination, with an autocar, of curved openended air-conduits which extend a short distance along each side of the car and curve around its rear end a short distance, whereby air is dicharged from its rear end crosswise of the car and close to its rear end.

It also consists in the more specific construction and combinations of parts shown in the drawings and hereinafter described and claimed.

In the drawings, Figure 1 is a perspective View of one side of the rear end of an automobile touring-car, and Fig. 2 is a plan view of the rear end of said car.

Referring to the parts by letters, A represents the autocar-body, which is of familiar form, and 13 represents the rear mud-guards, which are secured to said body near the rear end thereof.

0 represents a thin sheet, preferably of metal, whichextends along the side of the car for a short distance and then curves around about the rear end thereof, following substantially the curvature of the car-body. This sheet, as shown, extends from the mud-guard up to about the level of the top of the carriagebod y, and the sheets are held in place by suitable bracket-arms 0. One of such sheets is secured on each side of the body. The result of so placing these sheets in the position described is that there is formed between them and the carriage-body air-conduits having open front ends, into which air must necessarily flow as the carriage moves forward, and having open rear ends directed crosswise of the carriage and behind the same. The aircnrrents which flow into the front ends of these conduits are deflected and are discharged across the rear end of the car in a zone near the upper edge thereof. This air is taken from a considerable distance above the ground, where it is not laden with dust raised by the carriage itself. As it flows from the rear end of these conduits it relieves the partial vacuum behind the car near the upper edge thereof. Because of this fact the dust-laden air which rushes up behind the car to fill the partial vacuum is checked and held down by this zone of relatively pure air delivered from these conduits and does not,

therefore, flow over the rear top edge of the car. The tops of these conduits are open in the construction. shown, and it is believed that the apparatus is more efficient when they are so opened, because relatively pure air is discharged from their said tops for substantially their entire length, wherefore the protecting zone of pure air is practically coextensive with the conduits; but this is not regarded as a material characteristic of the generic invention. It will also be noticed that the lower part of the front end of the conduits are closed, and it is thought that it isof advantage to have the lower parts closed to the extent shown, because the upward flow of distance around the rear end thereof toward each other, substantially as and for pose specified.

3. The combination with an autocar, of a curved sheet secured to the car-body a short the purdistance therefrom and extended along the side of the car and around the rear end thereof, substantially as and for the purpose specified.

e. The combination with an antocar and its rear-wheel mud-guards, of two curved sheets secured to the body above and close to said mud-guards and a short distance from said body, said sheets extending along the sides of the car and a short distance around the rear end thereof, substantially as and for the purpose specified.

In testimony whereof I hereunto affix my signature in the presence of two Witnesses.

WILLIAM H. BROWN.

Witnesses:

E. B. GILCHRIST, E. L. 'lnUnsToN. 

